The factory leather seats are very durable and easy to clean. Since I paid for the new seats I intend to use them, whoever buys this Jeep in the distant future will get to enjoy the aftermarket seat covers.

I would stick to factory. They are easily cleaned and protected as said above. Good maintenance and regular leather conditioner will go a long way. The wrinkles you'll get from sitting on it will happen regardless of seat covers. It's a fact of leather it will wrinkle over time. My dad had my old 2001 dodge Durango RT with leather an suede and it still looks fairly decent after almost no care on the seats. Hard use an they still look decent.

If you want seat covers I stop your stones from sticking to the seat than a light coloured seat core would be a good choice for topless days